Flynn turned off the camera and concentrated on breathing deeply.

Tommy, concentrating deeply, paid no attention to this outburst of exuberance.

Robillard, concentrating deeply, then shifted the line of fire, burning away a second monster.

After several minutes, Guinan shut her eyes, concentrating deeply, almost as if in a trance.

She frowned as if concentrating deeply on her book.

Robyn whispered, and the prince saw that she was concentrating deeply, still staring at the sky.

An older neighbor concentrated deeply, the fingertips of his weathered hands held lightly together.

Cecil closed his eyes, held his breath, and concentrated deeply.

Kai covered the gash with his hand and concentrated deeply.